Saw-set.



A. B. ANDERSON-& J. L. PETERSEN.

SAW SET-.

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A. B. ANDERSON a J. L PETERSEN.

SAW SET.

APPLICATION FILED APR. 7. I917.

v Patented Mar; 12, 1918..

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hereinafter described ANDREW B. ANDERSON AND JOHN L. PETERSEN, OFLAKE MILLS, IOWA.

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Specification of Letters Patent. Pat t g. 12, 11918,

Application filed April 7, 1917. Serial No. 160,463.

To all whom it may concern;

Be it known that we, ANDREW B. ANDER- soN, a citizen of the United States, and J OHN L. Pnrnnsnn, a citizen ofthe Kingdom of saws used by butchers, and the object of the "1111 611111011 1s to provide an attachment for the type of saw set shown and described in Letters Patent of the United States numbered 1,205,072, issued to us on the. l-ftthdayof November, 1916, by meansof whichthe blade of a butchers saw, Or one having similar teeth, can be securely clamped and the teeth easily and quickly set. Other objects of the invention will appear from the following detaileddescription.

The invention consists generally in various constructions and combinations, all as and particularly pointed out in the claims.

In thevaccompanying drawings forming part of this specification,

Figure 1 is a side elevation of a saw setting apparatus embodying our invention,

Fig. 2 is a plan sectional view of the same, Fig. 3 is a front elevation, 1 Fig. at is a detail sectional view of the saw blade support and the clamping jaws,

Fig. 5 is a sectional figure taken on line :.5 of Fig. 1, showing the means for adjusting one of the setting dies, I v

Fig. 6 is a view, showing a clamp for carpenters or butchers saws. In the drawing, 2 represents a suitable upright standard, having horizontally projecting brackets 3 and 1 thereon. Bolts 5 are mounted in the standard 2 opposite the bracket 3 and a slide 6 has slots 7 therein to receive said bolts and on which bolts'said slide is vertically movable, being clamped, at

difi'erent elevations by loosening or tightening the nuts of said bolts. At the upper end of the slide outwardly projecting ears 8 are provided on each side of the standard, hav-'- ing bolts 9 therein to enter slots 10 formed in parallel arms 11 whichiproject from the plate 12 upon each side of the upright standard and are slidable horizontally by means of the bolts 9 and slots 10 back and its raised position.

forth to increase or decreasethe distance of the plate 12 from said standard. The standard has av recess 13 therein wherein the lower die let of the set is pivoted, the free end of said the projecting outwardly over a set screw I l-"which ismounted in the 'bracket3 and'has a head 15 provided with a toothed surface to receive a spring latch for holding the screw against accidental rotation. Suitable graduations are provided on the head of the screw for indicating the number of threads projecting above the top of the supporting bracket. A second die 17 is mounted to slide in the bracket 4 and is pivotally connected at its upper end with an operating lever 18' which has a link connection 19 with the upper end of the standard. [A spring 20 on said die bears on the lever 18 and the bracket 4 normally holds the die in The plate 12, which 'forins the subject matter of our present in- I vention, has a recess 21 therein adapted to receive a bar 22. This bar has a loop 23 formed 1n one end thereof, provided with a clampingscrew 24: and the opposite end of said bar has a block 25 slidable thereon and supporting. a similar clamping screw 24*. The rear portion of the plate 12 has stop pins 25 therein. The saw to be set, which we will designate by reference numeral 27,

is placed on the bar 22 and secured by means of the clamps 24 and 2%, the rear edgeof the saw blade bearing on the pins 26 and its toothed edge projecting beyond the inner edge of said bar. The rear edge of the bar 22 is provided with a series of notches 28 to receive a dog 29 that is mounted on a lever 30 pivoted at 31 on the underside of the plate 12and normally held in engagement with the notched edge of said plate through an opening 32 by means of a spring 33.. A bracket 34 is preferably mounted on said plate, overhanging the bar 12, and a guiding screw 35 is mounted in said bracket and'is adjusted close to the surface of the saw blade to form a guide therefor and prevent it from bending or buckling whenthe teeth opposite the. guide screw are actedon by the setting dies.

To operate the device, the bar and the blade mounted thereon are properly adjusted to bring the teeth to be set in position between the dies and during the setting operation the bar is locked by the dog 29. As soon as a tooth is set, the lever 30 is operatedand thereupon the bar will be lugs 36 having their faces so arranged that.

released and 'may be moved lengthwise to bring another tooth in proper position between the dies. As shown plainly in Fig. 2, the notches in the bar 22 are arranged opposite the position of the teeth in the saw blade and when the operator releases the dog 29 and moves the bar to engage another notch with the dog, he will position the secvond tooth from the one first set between the dies so that the alternate teeth in the saw blade will be set in the same direction. The blade is then reversed and the operation repeated to set the remaining teeth in the opposite direction. By this means careful or accurate adjustment of the saw blade to position each tooth between the dies is unnecessary, for when the blade has been properly mounted on the bar, it will be only necessary for the operator to release the dog and move the bar step by step to properly aline the alternate teeth with the setting dies.

In Fig. 6 we have shown a modified form of plate 36 to be substituted in place of the arms 11 and having a support 37 for a bucksaw blade 38 or for the blade of a carpenter saw, the plate having a bracket 39 overhanging the support 37 and provided with a clamping screw 40 which engages the blade of the saw to aid in holding the saw in place during the setting operation. We also prefer to provide upwardly pro ecting guide when the teeth of the saw' are in contact with them the points of the teeth opposite the setting dies will be properly positioned to be set. Ihe plate 36 may be moved back 7 and forth on its support to vary the position of the guide lugs with respect to the setting dies to adapt the device for saw blades of different width.

With this attachment the clamping means at the ends of the saw blade will not be necessary, the support 37 forming sufiicient bearing for the blade, which is moved back and forth under the clamping screw 40 while the teeth bear lightly on the lugs 36' and are guided thereby to their proper setting position.

In various ways the details of construction may be modified and still be within the scope of the appended claims.

We claim as our invention:

1. In combination, with the setting dies a saw blade carrier having means for securing the blade thereon, said carrier having notches opposite which the teeth of said blade are adjusted, a guide for said carrier, a dog for engaging said notches, and locking said carrier, and means for operating said dog to release said carrier, the movement of said carrier and the engagement of said dog with the successive notches registering the alternate teeth of said blade with said dies. v

2. The combination, with a support, of setting dies mounted therein, a bar having means for securing a saw blade thereon, a guide for said bar mounted for adjustment toward and from said dies to accommodate diii'erent widths of saw bladesand mechanism for registering the alternate teeth of said saw blade with said dies with the lengthwise movement 01' said bar in said guide.

3. The combination, with a support, of setting dies mounted therein, a bar having means for mounting a saw blade thereon and mounted for adjustment toward and from said dies to accommodate different widths of saw blades, and means for guiding said blade to position its teeth between the dies during the lengthwise movement of said bar.

i. A saw setting device comprising a support, setting dies mounted therein, a carrier wherein a saw blade is secured, a guide for said carrier positioned to present the saw teeth between said dies, said carrier being movable lengthwise back and forth in front of said dies to adjust the saw teeth between them, and said carrier having means for positioning the teeth of the saw so that upon the movement of the carrier in one direction every other tooth,-counting from one end of the saw, will be presented to the dies to be set in one direction, and upon the reversal of said carrier the remainder of the teeth will be presented to the dies to be set in the opposite direction.

In witness whereof, we have hereunto set our hands this 2nd day of April 1917.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

